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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_000_010_671">&nbsp;</a>NAME</h4><blockquote>
wcswidth - number of column positions of a wide-character string
</blockquote><h4><a name = "tag_000_010_672">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="wchar.h.html">wchar.h</a>&gt;

int wcswidth(const wchar_t *<i>pwcs</i>, size_t <i>n</i>);
</code>
</pre>
</blockquote><h4><a name = "tag_000_010_673">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>wcswidth()</i>
function determines the number of column positions required for
<i>n</i>
wide-character codes (or fewer than
<i>n</i>
wide-character codes if a null wide-character code is encountered before
<i>n</i>
wide-character codes are exhausted) in the string pointed to by
<i>pwcs</i>.
</blockquote><h4><a name = "tag_000_010_674">&nbsp;</a>RETURN VALUE</h4><blockquote>
The
<i>wcswidth()</i>
function either returns 0 (if
<i>pwcs</i>
points to a null wide-character code), or returns the number of
column positions to be occupied by the wide-character string pointed to by
<i>pwcs</i>,
or returns -1 (if any of the first
<i>n</i>
wide-character codes in the wide-character string pointed to by
<i>pwcs</i>
is not a printing wide-character code).
</blockquote><h4><a name = "tag_000_010_675">&nbsp;</a>ERRORS</h4><blockquote>
No errors are defined.
</blockquote><h4><a name = "tag_000_010_676">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_010_677">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_010_678">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_010_679">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="wcwidth.html">wcwidth()</a></i>,
<i><a href="wchar.h.html">&lt;wchar.h&gt;</a></i>,
the definition of <b>Column Position</b> in the
<b>XBD</b> specification, <b>Chapter 2</b>, <b>Glossary</b>.
</blockquote><h4>DERIVATION</h4><blockquote>
Derived from the MSE working draft.
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]

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